package com.studycloud.service;

import cn.hutool.core.util.IdUtil;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.PathVariable;

import java.util.concurrent.TimeUnit;

/**
 * 订单接口实现的服务层
 * @author JP
 */
@Service
public class PaymentService
{
    /**
     * 正常访问测试  hystrix
     * @param id
     * @return
     */
    public String paymentInfo_OK(Integer id)
    {
        return "线程池: "+Thread.currentThread().getName()+"   paymentInfo_OK,id"+id+"\t"+".....";
    }

    /**
     * 错误访问测试  hystrix
     * @param id
     * @return
     */
    @HystrixCommand(fallbackMethod = "paymentInfo_NOHandler",commandProperties = {
            @HystrixProperty(name = "execution.isolation.thread.timeoutInMilliseconds",value = "3000")
    })
    public String paymentInfo_NO(Integer id)
    {
        int timeNumber = 3;
        try{
            TimeUnit.SECONDS.sleep(timeNumber);
        }catch (InterruptedException interruptedException){interruptedException.getLocalizedMessage();}
        return "线程池: "+Thread.currentThread().getName()+"   paymentInfo_NO,id"+id+"\t"+".....耗时"+timeNumber+"秒";
    }


    /**
     * Hystrix 备胎
     * @param id
     * @return
     */
    public String paymentInfo_NOHandler(Integer id)
    {
        return "线程池: "+Thread.currentThread().getName()+"   paymentInfo_OK,id"+id+"\t"+".....你的问题我帮你解决了";
    }

    /**
     * 服务熔断
     */
    @HystrixCommand(fallbackMethod = "paymentCircuitBreaker_fallback",commandProperties = {
            @HystrixProperty(name = "circuitBreaker.enabled",value = "true"),// 是否开启断路器
            @HystrixProperty(name = "circuitBreaker.requestVolumeThreshold",value = "10"),// 请求次数
            @HystrixProperty(name = "circuitBreaker.sleepWindowInMilliseconds",value = "10000"), // 时间窗口期
            @HystrixProperty(name = "circuitBreaker.errorThresholdPercentage",value = "60"),// 失败率达到多少后跳闸
    })
    public String paymentCircuitBreaker(@PathVariable("id") Integer id)
    {
        if(id < 0)
        {
            throw new RuntimeException("******id 不能负数");
        }
        String serialNumber = IdUtil.simpleUUID();

        return Thread.currentThread().getName()+"\t"+"调用成功，流水号: " + serialNumber;
    }
    public String paymentCircuitBreaker_fallback(@PathVariable("id") Integer id)
    {
        return "id 不能负数，请稍后再试，/(ㄒoㄒ)/~~   id: " +id;
    }

}
